In a utopian city, a man wakes with a compulsion to do the unthinkable: leave the city. With no police or military, the city has other ways of keeping citizens within its walls. The city might be heaven, but getting out is hell.

Malcolm Whyman, the author of the spider knife, once lived atop a sandstone cliff in old Lenton, Nottingham. He has brought his imagination to bear, upon the possibilities thrown up by as of yet unidentified caves and passages.